Page 4 is up with some close-ups of Groon and Gastness, and I thought something was wrong on Gastness, and yup', it's got the blade on the head in the wrong direction. It should in the sens of walk, not from left to right.
All the other Gastness MH pictures I have show the blade in the sens of walk, and though the shading of the blade are quite weird (whether in Smokewalls than in the manga) that's how the blade looks to be.
Well great work anyway, it even looks to be an MM kit (maybe they used another MH as a base, but the babelfish translation doesn't work well)